/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:14,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:14,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:14,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:14,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:14,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:14,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:14,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:14,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:14,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:14,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:14,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:14,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:14,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:14,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:14,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:14,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:14,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:14,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:14,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:14,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:14,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:14,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:14,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:14,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:14,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:14,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:14,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:14,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:14,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:14,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:14,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:14,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:14,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:14,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:14,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:14,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:14,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:14,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:14,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:15,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:15,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:01:15,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:15,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:15,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:15,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:15,046 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:15,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:15,046 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:15,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:15,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:15,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:15,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:15,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:15,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:15,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:15,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:15,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:15,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:15,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:15,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:15,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:15,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:15,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:15,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:15,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:15,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:15,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:15,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:15,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:15,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:15,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:01:15,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:15,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:15,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:15,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:15,533 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:15,535 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 09:01:15,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c71ed061/5a8dfa608a6e4717b197223fbc4fb5c5/FLAGe728f5a56 [2020-09-25 09:01:16,204 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:16,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 09:01:16,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c71ed061/5a8dfa608a6e4717b197223fbc4fb5c5/FLAGe728f5a56 [2020-09-25 09:01:16,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c71ed061/5a8dfa608a6e4717b197223fbc4fb5c5 [2020-09-25 09:01:16,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:16,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:16,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:16,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:16,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:16,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:16" (1/1) ... [2020-09-25 09:01:16,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b5b041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:16, skipping insertion in model container [2020-09-25 09:01:16,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:16" (1/1) ... [2020-09-25 09:01:16,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:16,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:17,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:17,046 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:17,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:17,316 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:17,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:17 WrapperNode [2020-09-25 09:01:17,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:17,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:17,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:17,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:17,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:17" (1/1) ... [2020-09-25 09:01:17,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:17" (1/1) ... [2020-09-25 09:01:17,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:17" (1/1) ... [2020-09-25 09:01:17,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:17" (1/1) ... [2020-09-25 09:01:17,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:17" (1/1) ... [2020-09-25 09:01:17,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:17" (1/1) ... [2020-09-25 09:01:17,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:17" (1/1) ... [2020-09-25 09:01:17,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:17,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:17,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:17,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:17,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:17,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:18,912 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:18,913 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:18,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:18 BoogieIcfgContainer [2020-09-25 09:01:18,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:18,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:18,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:18,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:18,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:16" (1/3) ... [2020-09-25 09:01:18,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41302deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:18, skipping insertion in model container [2020-09-25 09:01:18,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:17" (2/3) ... [2020-09-25 09:01:18,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41302deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:18, skipping insertion in model container [2020-09-25 09:01:18,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:18" (3/3) ... [2020-09-25 09:01:18,932 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-09-25 09:01:18,944 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:18,955 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:18,983 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:19,021 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:19,021 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:19,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:19,022 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:19,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:19,022 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:19,022 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:19,022 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:01:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 09:01:19,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:19,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:19,078 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:19,087 INFO L82 PathProgramCache]: Analyzing trace with hash -2144769179, now seen corresponding path program 1 times [2020-09-25 09:01:19,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:19,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774023448] [2020-09-25 09:01:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:24,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 09:01:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:01:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-25 09:01:24,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:24,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 09:01:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 09:01:24,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:01:24,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:24,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:24,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:24,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:24,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:01:24,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:24,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:24,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:01:24,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:24,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774023448] [2020-09-25 09:01:24,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:24,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:01:24,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117866154] [2020-09-25 09:01:24,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:24,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:24,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:24,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:24,786 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 09:01:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:27,616 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 09:01:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:01:27,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 09:01:27,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:27,665 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 09:01:27,665 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 09:01:27,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:27,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 09:01:27,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 09:01:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:01:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 09:01:27,833 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 139 [2020-09-25 09:01:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:27,836 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 09:01:27,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 09:01:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 09:01:27,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:27,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:27,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:01:27,855 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:27,855 INFO L82 PathProgramCache]: Analyzing trace with hash 473875351, now seen corresponding path program 1 times [2020-09-25 09:01:27,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:27,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856677364] [2020-09-25 09:01:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:32,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 09:01:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:01:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:01:32,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:32,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 09:01:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 09:01:32,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:33,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:33,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:01:33,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:33,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:33,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:33,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:33,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:33,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 09:01:33,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:33,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:33,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:01:33,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:01:33,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:33,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:01:33,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:33,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856677364] [2020-09-25 09:01:33,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:33,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:33,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482003737] [2020-09-25 09:01:33,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:33,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:33,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:33,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:33,240 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 5 states. [2020-09-25 09:01:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:35,547 INFO L93 Difference]: Finished difference Result 1597 states and 2001 transitions. [2020-09-25 09:01:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:01:35,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 09:01:35,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:35,556 INFO L225 Difference]: With dead ends: 1597 [2020-09-25 09:01:35,557 INFO L226 Difference]: Without dead ends: 1018 [2020-09-25 09:01:35,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:35,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-09-25 09:01:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 758. [2020-09-25 09:01:35,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-09-25 09:01:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 933 transitions. [2020-09-25 09:01:35,587 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 933 transitions. Word has length 161 [2020-09-25 09:01:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:35,588 INFO L479 AbstractCegarLoop]: Abstraction has 758 states and 933 transitions. [2020-09-25 09:01:35,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 933 transitions. [2020-09-25 09:01:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 09:01:35,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:35,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:35,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:35,594 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:35,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1701451615, now seen corresponding path program 1 times [2020-09-25 09:01:35,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:35,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470189729] [2020-09-25 09:01:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:35,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:40,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:40,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 09:01:40,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:40,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 09:01:40,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:40,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 09:01:40,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:40,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:40,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:40,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:40,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:40,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:01:40,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:40,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:40,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:40,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:01:40,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:40,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 09:01:40,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:40,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:40,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:40,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 09:01:40,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:41,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470189729] [2020-09-25 09:01:41,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:41,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:01:41,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431366210] [2020-09-25 09:01:41,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:41,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:41,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:41,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:41,061 INFO L87 Difference]: Start difference. First operand 758 states and 933 transitions. Second operand 7 states. [2020-09-25 09:01:43,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:43,508 INFO L93 Difference]: Finished difference Result 1633 states and 2009 transitions. [2020-09-25 09:01:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:43,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 09:01:43,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:43,514 INFO L225 Difference]: With dead ends: 1633 [2020-09-25 09:01:43,514 INFO L226 Difference]: Without dead ends: 899 [2020-09-25 09:01:43,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:01:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-09-25 09:01:43,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 812. [2020-09-25 09:01:43,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-09-25 09:01:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 948 transitions. [2020-09-25 09:01:43,547 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 948 transitions. Word has length 176 [2020-09-25 09:01:43,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:43,548 INFO L479 AbstractCegarLoop]: Abstraction has 812 states and 948 transitions. [2020-09-25 09:01:43,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:43,548 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 948 transitions. [2020-09-25 09:01:43,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 09:01:43,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:43,552 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:43,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:43,553 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:43,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:43,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1190688682, now seen corresponding path program 1 times [2020-09-25 09:01:43,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:43,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272658688] [2020-09-25 09:01:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:44,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:48,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:48,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:48,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 09:01:48,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:01:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:01:48,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:48,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:01:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 09:01:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:48,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:48,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:48,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:48,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:01:48,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:48,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:01:48,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:48,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:48,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:48,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:48,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 09:01:48,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:48,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 09:01:48,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:48,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:01:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:48,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272658688] [2020-09-25 09:01:48,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:48,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:01:48,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780021626] [2020-09-25 09:01:48,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:01:48,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:48,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:01:48,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:48,918 INFO L87 Difference]: Start difference. First operand 812 states and 948 transitions. Second operand 8 states. [2020-09-25 09:01:51,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:51,934 INFO L93 Difference]: Finished difference Result 2545 states and 3134 transitions. [2020-09-25 09:01:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:01:51,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-09-25 09:01:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:51,947 INFO L225 Difference]: With dead ends: 2545 [2020-09-25 09:01:51,947 INFO L226 Difference]: Without dead ends: 1757 [2020-09-25 09:01:51,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:01:51,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2020-09-25 09:01:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1610. [2020-09-25 09:01:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2020-09-25 09:01:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1903 transitions. [2020-09-25 09:01:52,029 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1903 transitions. Word has length 182 [2020-09-25 09:01:52,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:52,029 INFO L479 AbstractCegarLoop]: Abstraction has 1610 states and 1903 transitions. [2020-09-25 09:01:52,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:01:52,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1903 transitions. [2020-09-25 09:01:52,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 09:01:52,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:52,036 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:52,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:52,037 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:52,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:52,037 INFO L82 PathProgramCache]: Analyzing trace with hash -318750663, now seen corresponding path program 1 times [2020-09-25 09:01:52,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:52,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588391226] [2020-09-25 09:01:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:52,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:52,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:57,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 09:01:57,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 09:01:57,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:57,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:57,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:57,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:01:57,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:01:57,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:57,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:57,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:57,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:57,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:01:57,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:57,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:57,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:57,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:57,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:57,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:01:57,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:57,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:01:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:01:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:57,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 09:01:57,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 09:01:57,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:57,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:01:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:01:57,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588391226] [2020-09-25 09:01:57,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:57,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:57,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277155834] [2020-09-25 09:01:57,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:57,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:57,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:57,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:57,392 INFO L87 Difference]: Start difference. First operand 1610 states and 1903 transitions. Second operand 7 states. [2020-09-25 09:01:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:59,691 INFO L93 Difference]: Finished difference Result 3640 states and 4437 transitions. [2020-09-25 09:01:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:59,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 09:01:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:59,704 INFO L225 Difference]: With dead ends: 3640 [2020-09-25 09:01:59,705 INFO L226 Difference]: Without dead ends: 2054 [2020-09-25 09:01:59,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:01:59,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2020-09-25 09:01:59,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1940. [2020-09-25 09:01:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1940 states. [2020-09-25 09:01:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2304 transitions. [2020-09-25 09:01:59,792 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2304 transitions. Word has length 203 [2020-09-25 09:01:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:59,792 INFO L479 AbstractCegarLoop]: Abstraction has 1940 states and 2304 transitions. [2020-09-25 09:01:59,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2304 transitions. [2020-09-25 09:01:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 09:01:59,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:59,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:59,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:59,800 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:59,801 INFO L82 PathProgramCache]: Analyzing trace with hash -914003078, now seen corresponding path program 1 times [2020-09-25 09:01:59,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:59,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792893569] [2020-09-25 09:01:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:59,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:59,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:05,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 09:02:05,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:02:05,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-09-25 09:02:05,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:05,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:05,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:02:05,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 09:02:05,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 09:02:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:05,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:05,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:05,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:02:05,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:05,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:02:05,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:05,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:05,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:05,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:05,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:02:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:05,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:05,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:02:05,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 09:02:05,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:05,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:02:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:02:05,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:05,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:02:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:05,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:05,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 09:02:05,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:05,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 09:02:05,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:05,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:02:05,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:02:05,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792893569] [2020-09-25 09:02:05,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:05,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:02:05,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415809206] [2020-09-25 09:02:05,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:02:05,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:05,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:02:05,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:02:05,405 INFO L87 Difference]: Start difference. First operand 1940 states and 2304 transitions. Second operand 8 states.